DESCRIPTIO Supply Current 300µA Receivers Kept Alive SHUTDOWN 35µ
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LTC1350 3.3V Power EIA/TIA-562 3-Driver/ 5-Receiver Transceiver FEATURES
DESCRIPTIO
Supply Current 300µA Receivers Kept Alive SHUTDOWN 35µA Protection ±10kV Operates from Single 3.3V Supply Uses Small Capacitors 0.1µF Operates 120kBaud Three-State Outputs High Impedance When Output Overvoltage Does Force Current Back into Supplies EIA/TIA-562 Lines Forced ±25V Without Damage Flowthrough Architecture
LTC1350 3-driver/5-receiver EIA/TIA-562 transceiver with very supply current. load condition, supply current only 300µA. charge pump only requires four 0.1µF capacitors. SHUTDOWN mode, receivers kept alive supply current only 35µA. RS232 outputs assume high impedance state SHUTDOWN with power off. LTC1350 fully compliant with data rate overvoltage EIA/TIA-562 specifications. transceiver operate 120kbaud with 1000pF load. Both driver outputs receiver inputs forced ±25V without damage survive multiple ±10kV strikes.
APPLICATI
Notebook Computers Palmtop Computers
TYPICAL APPLICATI
ON/OFF LTC1350
3-Drivers/5-Receivers with Shutdown
LTC1350 TA01
Quiescent Shutdown Supply Current Temperature
QUIESCENT CURRENT (µA)
TEST CONDITION: 3.3V DRIVER INPUTS TIED
SHUTDOWN CURRENT
SHUTDOWN CURRENT (µA)
QUIESCENT CURRENT
TEMPERATURE (°C)
LTC1350 TA02
LTC1350 ABSOLUTE RATI
PACKAGE/ORDER ATIO
VIEW
Supply Voltage (VCC) Input Voltage Driver 0.3V 0.3V Receiver ON/OFF 0.3V 0.3V Output Voltage Driver Receiver 0.3V 0.3V Short-Circuit Duration Driver Output Indefinite Receiver Output Indefinite Operating Temperature Range Commercial (LTC1350C) 70°C Industrial (LTC1350I) 40°C 85°C Storage Temperature Range 65°C 150°C Lead Temperature (Soldering, sec). 300°C
ORDER PART NUMBER LTC1350CG LTC1350CN LTC1350CS LTC1350IG LTC1350IN LTC1350IS
ON/OFF
PACKAGE PACKAGE 28-LEAD PLASTIC 28-LEAD SSOP PACKAGE 28-LEAD PLASTIC
TJMAX 125°C, 96°C/W TJMAX 125°C, 56°C/W TJMAX 125°C, 85°C/W
Consult factory Military grade parts
ELECTRICAL CHARACTERISTICS
PARAMETER Driver Output Voltage Swing Logic Input Voltage Level Logic Input Current Output Short-Circuit Current Output Leakage Current Receiver Input Voltage Thresholds Hysteresis Input Resistance Output Voltage Output Short-Circuit Current Output Leakage Current CONDITIONS
3.3V, 0.1µF, unless otherwise noted.
Positive Negative
UNITS
Input Level (VOUT High) Input High Level (VOUT Low) VOUT SHUTDOWN (Note VOUT ±20V Input Threshold Input High Threshold ±10V Output Low, IOUT 1.6mA (VCC 3.3V) Output High, IOUT 160µA (VCC 3.3V) Sinking Current, VOUT SHUTDOWN (Note VOUT
LTC1350
ELECTRICAL CHARACTERISTICS 3.3V, 0.1µF, unless otherwise noted.
PARAMETER Power Supply Generator Output Voltage Output Voltage Supply Rise Time Power Supply Supply Current CONDITIONS IOUT IOUT IOUT IOUT SHUTDOWN Turn-On Load (All Drivers VCC)(Note 70°C Load (All Drivers 0)(Note 70°C Load (All Drivers VCC)(Note 85°C Load (All Drivers VCC)(Note 40°C Load (All Drivers 0)(Note 40°C 85°C SHUTDOWN (Note
UNITS
ON/OFF Threshold ON/OFF Threshold High
CHARACTERISTICS
PARAMETER Slew Rate Driver Propagation Delay (TTL EIA/TIA-562) Receiver Propagation Delay (EIA/TIA-562 TTL)
0.1µF, unless otherwise noted.
CONDITIONS 51pF 1000pF (Figure (Figure (Figure (Figure
UNITS V/µs V/µs
denotes specifications which apply over operating temperature range 70°C commercial grade, 40°C 85°C Industrial grade. Note Absolute maximum ratings those values beyond which life device impaired.
Note Supply current measured with driver receiver outputs unloaded. Note Supply current measurement SHUTDOWN mode performed with VON/OFF
LTC1350 TYPICAL PERFOR CHARACTERISTICS
Driver Output Voltage Temperature
3.3V OUTPUT HIGH THRESHOLD VOLTAGE
DRIVER OUTPUT VOLTAGE
SUPPLY CURRENT (mA)
DRIVERS WITH LOAD,
3.3V OUTPUT
TEMPERATURE (°C)
LTC1350 TPC01
Supply Current Temperature
DRIVERS LOADED
SUPPLY CURRENT (mA)
TEMPERATURE (°C) DRIVER LOADED
LEAKAGE CURRENT (µA)
TEMPERATURE (°C) VOUT VOUT -20V
SHORT-CIRCUIT CURRENT (mA)
LTC1350 TPC04
Receiver Short-Circuit Current Temperature
SHORT-CIRCUIT CURRENT (mA)
INPUT DRIVER OUTPUT 1000pF DRIVER OUTPUT
ISC-
ISC+
LTC1350 TPC08 LTC1350 TPC09
TEMPERATURE (°C)
LTC1350 TPC07
Receiver Input Thresholds Temperature
TEMPERATURE (°C)
Supply Current Data Rate
3.3V 2500pF DRIVERS ACTIVE
VTH+ VTH-
DATA RATE Baud)
LT1350 TPC02
LTC1350 TPC03
Driver Leakage Shutdown Temperature
Driver Short-Circuit Current Temperature
ISC-
ISC+
TEMPERATURE (°C)
LTC1350 TPC05
LTC1350 TPC06
Driver Output Waveforms
Receiver Output Waveform
RECEIVER OUTPUT 50pF
INPUT
LTC1350 CTIO
VCC: 3.3V Input Supply Pin. Supply current typically 35µA SHUTDOWN mode. This should decoupled with 0.1µF ceramic capacitor. GND: Ground Pin. ON/OFF: TTL/CMOS Compatible Shutdown Pin. logic puts device SHUTDOWN mode with receivers kept alive supply current equal 35µA. driver other receiver outputs high impedance state. This cannot float. Positive Supply Output. 2VCC This requires external capacitor 0.1µF) charge storage. capacitor tied ground VCC. With multiple devices, pins paralleled into common capacitors. large number devices, increasing size shared common storage capacitors recommended reduce ripple. Negative Supply Output. (2VCC 1.3V). This requires external capacitor 0.1µF) charge storage. C1+, C1-, C2+, C2-: Commutating Capacitor Inputs. These pins require external capacitors 0.1µF): from another from maintain charge pump efficiency, capacitor's effective series resistance should less than EIA/TIA-562 Driver Input Pins. Inputs TTL/ CMOS compatible. Inputs should allowed float. unused inputs VCC. OUT: Driver Outputs EIA/TIA-562 Voltage Levels. Outputs high impedance state when SHUTDOWN mode driver outputs protected against ±10kV human body model discharges. Receiver Inputs. These pins forced ±25V without damage. receiver inputs protected against ±10kV human body model discharges. Each receiver provides 0.4V hysteresis noise immunity. OUT: Receiver Outputs with TTL/CMOS Voltage Levels. Receiver outputs high impedance state when SHUTDOWN mode allow data line sharing. Receivers kept alive SHUTDOWN.
SWITCHI WAVEFOR
INPUT OUTPUT 1.4V 1.4V
LTC1350
Figure Driver Propagation Delay Timing
INPUT OUTPUT
1.7V
1.3V 2.4V 0.8V
LTC1350
Figure Receiver Propagation Delay Timing
LTC1350 TEST CIRCUITS
Driver Timing Test Load
DRIVER OUTPUT DRIVER 51pF
Receiver Timing Test Load
OUTPUT INPUT 51pF
DRIVER INPUT
LTC1350 TA04 LTC1350 TA03
Test Circuit
0.1µF 0.1µF RS232 LINE PINS PROTECTED ±10kV ON/OFF LTC1350
LTC1350
0.1µF 0.1µF
LTC1350 PACKAGE DESCRIPTIO
0.0256 (0.65) 0.010 0.015 (0.25 0.38) *THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED 0.006 INCH (0.15mm).
Dimensions inches (millimeters) unless otherwise noted. Package 28-Lead SSOP
0.397 0.407* (10.07 10.33)
0.205 0.212* (5.20 5.38)
0.068 0.078 (1.73 1.99)
0.005 0.009 (0.13 0.22)
0.022 0.037 (0.55 0.95)
0.045 (1.14) 0.002 0.008 (0.05 0.21)
0.301 0.311 (7.65 7.90)
0.045 (1.14)
Package 28-Lead Plastic
0.070 (1.778) 1.455 (36.957)
0.600 0.625 (15.240 15.875)
0.130 0.005 (3.302 0.127) 0.015 (0.381)
0.045 0.065 (1.143 1.651)
0.009 0.015 (0.229 0.381)
0.505 0.560 (12.827 14.224) 0.125 (3.175) 0.035 0.080 (0.889 2.032) 0.100 0.010 (2.540 0.254) 0.018 0.003 (0.457 0.076)
+0.025 0.625 -0.015
+0.635 15.87 -0.381
Package 28-Lead Plastic
0.291 0.299 (7.391 7.595) (NOTE 0.697 0.712 (17.70 18.08) (NOTE
0.005 (0.127)
0.093 0.104 0.010 0.029 (2.362 2.642) (0.254 0.737) 0.050 (1.270)
0.037 0.045 (0.940 1.143)
0.009 0.013 (0.229 0.330) NOTE 0.016 0.050 (0.406 1.270)
0.014 0.019 (0.356 0.482)
0.004 0.012 (0.102 0.305)
NOTE
0.394 0.419 (10.007 10.643)
NOTE: IDENT, NOTCH CAVITIES BOTTOM PACKAGES MANUFACTURING OPTIONS. PART SUPPLIED WITH WITHOUT OPTIONS. THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED 0.006 INCH (0.15mm).
Information furnished Linear Technology Corporation believed accurate reliable. However, responsibility assumed use. Linear Technology Corporation makes representation that interconnection circuits described herein will infringe existing patent rights.
LTC1350
World Headquarters
Linear Technology Corporation 1630 McCarthy Blvd. Milpitas, 95035-7417 Phone: (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com CENTRAL REGION Linear Technology Corporation 2010 Algonquin Road Suite Schaumburg, 60173 Phone: (847) 925-0860 FAX: (847) 925-0878 Linear Technology Corporation Kenosha, 53144 Phone: (262) 859-1900 FAX: (262) 859-1974 SOUTHWEST REGION Linear Technology Corporation 21243 Ventura Blvd. Suite Woodland Hills, 91364 Phone: (818) 703-0835 FAX: (818) 703-0517 Linear Technology Corporation 15375 Barranca Parkway Suite A-213 Irvine, 92618 Phone: (949) 453-4650 FAX: (949) 453-4765 Linear Technology GmbH Zettachring D-70567 Stuttgart Germany Phone: (711) 1329890 FAX: (711) 7285055 JAPAN Linear Technology Bldg. 1-14 Shin-Ogawa-cho Shinjuku-ku Tokyo, Japan Phone: 3267-7891 FAX: 3267-8510 Linear Technology Tokyo Seimei Honmachi Bldg. 1-6-13 Awaza, Nishi-ku Osaka-shi, 550-0011, Japan Phone: 6533-5880 FAX: 6533-5885 KOREA Linear Technology Korea Co., Ltd. Yundang Building, #1002 Samsung-Dong 144-23 Kangnam-Ku, Seoul 135-090 Korea Phone: 792-1617 FAX: 792-1619 SINGAPORE Linear Technology Pte. Ltd. Yishun Industrial Park Singapore 768734 Phone: 753-2692 FAX: 752-0108 SWEDEN Linear Technology S-191 Sollentuna Sweden Phone: 623-1600 FAX: 623-1650 TAIWAN Linear Technology Corporation 602, Sec. Chung Shan Taipei, Taiwan, R.O.C. Phone: +886 2521-7575 FAX: +886 2562-2285 UNITED KINGDOM Linear Technology (UK) Ltd. Coliseum, Riverside Camberley, Surrey GU15 United Kingdom Phone: (1276) 677676 FAX: (1276) 64851
U.S. Area Sales Offices
NORTHEAST REGION Linear Technology Corporation 3220 Tillman Drive Suite Bensalem, 19020 Phone: (215) 638-9667 FAX: (215) 638-9764 Linear Technology Corporation Research Place North Chelmsford, 01863 Phone: (978) 656-4750 FAX: (978) 656-4760 NORTHWEST REGION Linear Technology Corporation Sycamore Drive Milpitas, 95035 Phone: (408) 428-2050 FAX: (408) 432-6331 SOUTHEAST REGION Linear Technology Corporation 17000 Dallas Parkway Suite Dallas, 75248 Phone: (972) 733-3071 FAX: (972) 380-5138 Linear Technology Corporation 9430 Research Blvd. Echelon Suite Austin, 78759 Phone: (512) 343-3679 FAX: (512) 343-3680 Linear Technology Corporation 1080 West Houston Parkway Suite Houston, 77043 Phone: (713) 463-5001 FAX: (713) 463-5009 Linear Technology Corporation 15100 Weston Parkway Suite Carey, 27513 Phone: (919) 677-0066 FAX: (919) 678-0041
International Sales Offices
CHINA (HONG KONG) Linear Technology Corp. Ltd. Unit 2109, Metroplaza Tower Hing Fong Road Kwai Fong, N.T., Hong Kong Phone: +852 2428-0303 FAX: +852 2348-0885 FRANCE Linear Technology S.A.R.L. Immeuble Quartz" Chemin Justice 92290 Chatenay Malabry France Phone: 41079555 FAX: 46314613 GERMANY Linear Technology GmbH Oskar-Messter-Str. D-85737 Ismaning Germany Phone: (89) 962455-0 FAX: (89) 963147 Linear Technology GmbH Haselburger Damm D-59387 Ascheberg Germany Phone: (2593) 9516-0 FAX: (2593) 951679
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7417
(408)432-1900 FAX: (408) 434-0507 www.linear-tech.com
sn1350 1350fs LT/GP 1293 PRINTED
LINEAR TECHNOLOGY CORPORATION 1993
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